package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import io.swagger.annotations.ApiOperation;
import org.apache.poi.util.Units;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.GetMapping;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //复制属性
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置状态
        employee.setStatus(StatusConstant.ENABLE);
        //设置时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //设置创建修改人信息
        //TODO 后期改成登录用户
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());
        //Employee employee1 = employeeMapper.getuserById(BaseContext.getCurrentId());
        //System.out.println(employee1.getName());

        //调用持久层
        employeeMapper.insert(employee);
    }


    /**
     * 分页查询
     * @return
     */
    public PageResult pagequery(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page=employeeMapper.pageQuery(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total,records);
    }

    /**
     * 修改员工状态
     * @param status,id
     */
    public void changeStatus(int status,long id) {
        Employee employee=employeeMapper.getuserById(id);
        employee.setStatus(status);
        //employee.setUpdateUser(BaseContext.getCurrentId());
        //employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.changeStatus(employee,BaseContext.getCurrentId());
    }

    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    public Employee getuserById(Long id) {
        Employee employee = employeeMapper.getuserById(id);
        employee.setPassword("******");
        return employee;
    }

    /**
     * 修改员工信息
     * @param employeeDTO
     */
    public void change(EmployeeDTO employeeDTO) {
        Employee employee = employeeMapper.getuserById(employeeDTO.getId());
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.change(employee);
    }

    /**
     * 判断密码是否正确
     * @param oldPassword
     * @return
     */
    public Boolean judgePassword(String oldPassword) {
        oldPassword = DigestUtils.md5DigestAsHex(oldPassword.getBytes());
        Employee employee = employeeMapper.getuserById(BaseContext.getCurrentId());
        if(oldPassword.equals(employee.getPassword())){
            return true;
        }else{
            return false;
        }
    }

    /**
     * 修改密码
     * @param newPassword
     */
    public void editPassword(String newPassword) {
        Employee employee = employeeMapper.getuserById(BaseContext.getCurrentId());
        newPassword = DigestUtils.md5DigestAsHex(newPassword.getBytes());
        employee.setPassword(newPassword);
        employeeMapper.editPassword(employee);
    }

}
